NM_022489.4:c.658G>C

Variant names:

• chr14-104703445-G-C
• rs530391015
• NM_022489.4:c.658G>C

Variant summary

Our verdict is Likely pathogenic. The variant received 8 ACMG points: 8P and 0B. PM1 PM2 PM5 PP3_Moderate

The NM_022489.4(INF2):​c.658G>C​(p.Glu220Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,459,720 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E220K) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: INF2 NM_022489.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.67
• Publications: 12 publications found

Genes affected

INF2 (HGNC:23791): (inverted formin 2) This gene represents a member of the formin family of proteins. It is considered a diaphanous formin due to the presence of a diaphanous inhibitory domain located at the N-terminus of the encoded protein. Studies of a similar mouse protein indicate that the protein encoded by this locus may function in polymerization and depolymerization of actin filaments. Mutations at this locus have been associated with focal segmental glomerulosclerosis 5.[provided by RefSeq, Aug 2010]

INF2 Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease dominant intermediate E

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, Labcorp Genetics (formerly Invitae)
• focal segmental glomerulosclerosis 5

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• familial idiopathic steroid-resistant nephrotic syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 8 ACMG points.

• PM1: In a hotspot region, there are 6 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 11 uncertain in NM_022489.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr14-104703445-G-A is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 523533.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.879

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022489.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	INF2	NM_022489.4	MANE Select	c.658G>C	p.Glu220Gln	missense	Exon 4 of 23	NP_071934.3	Q27J81-1
	INF2	NM_001426862.1		c.658G>C	p.Glu220Gln	missense	Exon 4 of 23	NP_001413791.1
	INF2	NM_001426863.1		c.658G>C	p.Glu220Gln	missense	Exon 4 of 23	NP_001413792.1	Q27J81-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	INF2	ENST00000392634.9	TSL:5 MANE Select	c.658G>C	p.Glu220Gln	missense	Exon 4 of 23	ENSP00000376410.4	Q27J81-1
	INF2	ENST00000398337.8	TSL:1	c.658G>C	p.Glu220Gln	missense	Exon 4 of 5	ENSP00000381380.4	Q27J81-3
	INF2	ENST00000617571.5	TSL:1	n.658G>C		non_coding_transcript_exon	Exon 3 of 22	ENSP00000483829.2	A0A087X118

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD2 exomes AF: 0.00000404 AC: 1 AN: 247256 AF XY: 0.00000741

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000895

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1459720 Hom.: 0 Cov.: 34 AF XY: 0.00000275 AC XY: 2 AN XY: 726212

African (AFR) AF: 0.00 AC: 0 AN: 33462

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86236

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51856

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5464

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111848

Other (OTH) AF: 0.00 AC: 0 AN: 60324

GnomAD4 genome Cov.: 34

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.55
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.040
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.50	T
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Uncertain	0.88	D
M_CAP	Pathogenic	0.62	D
MetaRNN	Pathogenic	0.88	D
MetaSVM	Uncertain	0.69	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		7.7
PrimateAI	Uncertain	0.56	T
PROVEAN	Uncertain	-2.5	N
REVEL	Pathogenic	0.65
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0090	D
Polyphen		1.0	D
Vest4		0.47
MutPred		0.76		Gain of catalytic residue at L224 (P = 8e-04)
MVP		0.90
MPC		2.4
ClinPred		0.86	D
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.54
gMVP		0.99
Mutation Taster		=29/71	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs530391015; hg19: chr14-105169782;